  <div class="row mb-2">
    <div class="col-lg d-flex justify-content-end p-1">
<button class="btn btn-danger navbar navbar-expand-lg  mr-2">
  <div class="collapse navbar-collapse" id="navbarNavDropdown">
    <ul class="navbar-nav">
      <li class="nav-item dropdown">
        <a class="nav-link dropdown-toggle text-white" href="#" id="navbarDropdownMenuLink" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
          操作
        </a>
        <div class="dropdown-menu  mr-2" aria-labelledby="navbarDropdownMenuLink">
          <a class="dropdown-item" href="/upload/5/?pljb={{ object.id }}" target="_blank">批量添加学员</a>
          <a class="dropdown-item" href="#">Another action</a>
          <a class="dropdown-item" href="#">Something else here</a>
        </div>
      </li>
    </ul>
  </div>
</button>
    </div>
</div>